Dermatologists can use liquid nitrogen or surgery to remove lesions from patients with a small number of AK, but for patients with dozens to hundreds of these lesions on their face, scalp, arms, legs, chest or back, a therapy that can cover a broad area (a “field treatment”) is needed.
![Precancerous Lesion Treatment](https://www.ascdermcare.com/wp-content/uploads/2021/01/dermatology_generic-1.jpg)